@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
    --bg-main: #F8FAFC;
    --bg-gradient: #F8FAFC;
    --surface: #FFFFFF;
    --surface-hover: #F1F5F9;
    --border: #E2E8F0;
    --border-hover: #CBD5E1;

    --primary: #1E3A8A; /* Deep Navy */
    --primary-glow: rgba(30, 58, 138, 0.08);
    --secondary: #334155; /* Slate */
    --secondary-glow: rgba(51, 65, 85, 0.06);

    --text-main: #0F172A; /* Slate 900 */
    --text-muted: #475569; /* Slate 600 */
    --text-glow: #1E293B;

    /* Semantic score tiers */
    --score-high: #166534;   /* forest green (CLB 10-12) */
    --score-mid: #1E3A8A;    /* slate-blue (CLB 7-9) */
    --score-low: #92400E;    /* warm amber/charcoal (CLB <=6) */

    --success: #166534;
    --success-glow: rgba(22, 101, 52, 0.08);
    --error: #991B1B;
    --error-glow: rgba(153, 27, 27, 0.08);
    --warning: #92400E;

    --radius: 4px;
    --transition: all 0.15s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* Custom Scrollbars */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(241, 245, 249, 0.5);
}
::-webkit-scrollbar-thumb {
    background: rgba(153, 27, 27, 0.2);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(153, 27, 27, 0.4);
}

/* Flat institutional card */
.glass-panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: none;
    transition: var(--transition);
}

.glass-panel:hover {
    border-color: var(--border-hover);
    box-shadow: none;
}

/* Typography Helpers */
.neon-text-indigo {
    color: var(--primary);
    text-shadow: none;
    font-weight: 700;
}

.neon-text-cyan {
    color: var(--primary);
    text-shadow: none;
    font-weight: 600;
}

/* Buttons and Controls */
.btn-primary {
    background: var(--primary);
    color: #fff;
    border: 1px solid var(--primary);
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    box-shadow: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:hover {
    background: #1E40AF;
    border-color: #1E40AF;
}

.btn-primary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
    filter: none;
}

.btn-secondary {
    background: var(--surface);
    color: var(--text-main);
    border: 1px solid var(--border);
    padding: 10px 20px;
    border-radius: var(--radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

.btn-secondary:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Input Styles */
.input-group {
    margin-bottom: 20px;
    position: relative;
}

.input-label {
    display: block;
    margin-bottom: 6px;
    color: var(--text-muted);
    font-size: 0.85rem;
    font-weight: 600;
}

.form-input {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px 12px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-glow);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Auth Container */
.auth-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: 40px;
    border-top: 4px solid var(--primary) !important;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-logo-mark {
    width: 56px;
    height: 56px;
    display: block;
    margin: 0 auto 14px;
}

.auth-header h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
    font-weight: 700;
    color: var(--primary);
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}

/* App Header */
.app-header {
    height: 70px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    position: sticky;
    top: 0;
    z-index: 100;
    background: #FFFFFF;
    box-shadow: none;
}

.logo {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: -0.01em;
    user-select: none;
}
.logo-mark {
    width: 34px;
    height: 34px;
    flex: 0 0 auto;
    display: block;
}
.logo-wordmark {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
    line-height: 1;
}
.logo-celpip {
    color: var(--primary);
    font-weight: 800;
    letter-spacing: 0.04em;
}
.logo-booster {
    color: var(--text-muted);
    font-weight: 600;
}

.user-nav {
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Premium Badge — soft chip, not a heavy brick */
.premium-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: rgba(153, 27, 27, 0.08);
    color: var(--primary);
    border: 1px solid rgba(153, 27, 27, 0.18);
    font-size: 0.68rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    vertical-align: middle;
    line-height: 1.4;
    box-shadow: none;
}

.free-badge {
    background: rgba(15, 23, 42, 0.06);
    color: var(--text-muted);
    font-size: 0.68rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(15, 23, 42, 0.08);
}

/* Locked content unlock CTA */
.btn-unlock-premium {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: 100%;
    padding: 10px 16px;
    border-radius: var(--radius);
    border: 1px solid rgba(153, 27, 27, 0.2);
    background: linear-gradient(180deg, rgba(153, 27, 27, 0.06) 0%, rgba(153, 27, 27, 0.02) 100%);
    color: var(--primary);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 650;
    letter-spacing: 0.01em;
    cursor: pointer;
    transition: var(--transition);
}

.btn-unlock-premium:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.btn-unlock-premium .unlock-ico {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    opacity: 0.9;
}

.bank-row-locked,
.learn-card-locked {
    background: rgba(153, 27, 27, 0.02);
    border-radius: var(--radius);
}

.bank-row-locked .attempt-info p:first-child,
.learn-card-locked h4 {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

/* Dashboard */
.dashboard-container {
    max-width: 1200px;
    margin: 40px auto;
    padding: 0 20px;
}

.dashboard-hero {
    margin-bottom: 40px;
    padding: 30px;
    border-left: 4px solid var(--primary) !important;
}

.dashboard-hero h2 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
}

.test-list-section h3, .history-section h3 {
    margin-bottom: 20px;
    font-size: 1.3rem;
    color: var(--text-main);
    border-bottom: 2px solid var(--border);
    padding-bottom: 8px;
}

.test-card {
    padding: 24px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.test-info h4 {
    font-size: 1.15rem;
    margin-bottom: 6px;
    color: var(--text-main);
}

.test-info p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Attempt list */
.attempt-item {
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.attempt-item:last-child {
    border-bottom: none;
}

.attempt-info p {
    font-size: 0.95rem;
    font-weight: 500;
}

.attempt-info span {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.attempt-score {
    text-align: right;
}

.attempt-score .score-text {
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
}

.attempt-score .band-text {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Split-Screen Exam Layout */
.exam-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    flex: 1;
    overflow: hidden;
    min-height: 0; /* allow flex child to shrink below content size */
}

.exam-pane {
    height: 100%;
    overflow-y: auto;
    padding: 40px;
}

.exam-left-pane {
    border-right: 1px solid var(--border);
    background: #ffffff;
}

.exam-right-pane {
    background: #f8fafc;
}

/* Practice Exam View — flex column so header/footer stay fixed */
#view-exam {
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Exam Controls (Official Test Style Header) */
.exam-header-bar {
    flex-shrink: 0;
    height: 60px;
    background: #4c050e; /* Deep Burgundy Red */
    color: #ffffff;
    border-bottom: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    font-weight: 600;
    position: relative;
    z-index: 200;
    box-shadow: 0 4px 16px rgba(76, 5, 14, 0.3);
}

.exam-timer {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 700;
    font-family: monospace;
    font-size: 1.2rem;
    color: #fca5a5; /* Light Pinkish Red */
    background: rgba(255, 255, 255, 0.08);
    padding: 6px 16px;
    border-radius: var(--radius);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

/* Mic Permission Indicator */
.mic-permission-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    padding: 5px 12px;
    border-radius: 20px;
    border: 1px solid transparent;
    transition: all 0.3s ease;
    cursor: default;
    white-space: nowrap;
}

.mic-permission-bar[data-status="awaiting"] {
    background: rgba(245, 158, 11, 0.15);
    color: #fcd34d;
    border-color: rgba(245, 158, 11, 0.4);
}

.mic-permission-bar[data-status="ready"] {
    background: rgba(34, 197, 94, 0.15);
    color: #86efac;
    border-color: rgba(34, 197, 94, 0.4);
}

.mic-permission-bar[data-status="denied"] {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border-color: rgba(239, 68, 68, 0.4);
}

.mic-permission-bar[data-status="denied"] #mic-permission-label {
    text-decoration: underline;
    cursor: pointer;
}

/* Voice Activity Indicator */
.mic-voice-indicator {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    margin-left: 4px;
    animation: voice-pulse 1s ease-in-out infinite;
}

.mic-voice-indicator.active {
    background: #22c55e;
    box-shadow: 0 0 8px #22c55e;
}

.mic-voice-indicator.idle {
    background: #94a3b8;
    animation: none;
}

@keyframes voice-pulse {
    0%, 100% { opacity: 0.4; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.1); }   padding: 12px 16px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

/* Mic Permission Reminder Banner */
.mic-permission-reminder {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    z-index: 199;
    background: linear-gradient(90deg, #b45309 0%, #92400e 100%);
    border-bottom: 2px solid #f59e0b;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.35);
    padding: 10px 24px;
    text-align: center;
    font-size: 0.88rem;
    font-weight: 500;
    color: #fffbeb;
}

.mic-permission-reminder.hidden {
    display: none;
}

/* Passages Formatting */
.passage-content {
    font-size: 1.05rem;
    color: #334155;
    line-height: 1.8;
}

.passage-content p {
    margin-bottom: 20px;
}

.passage-paragraph {
    margin-bottom: 30px;
    padding: 20px;
    background: #f8fafc;
    border-left: 4px solid var(--primary);
    border-radius: 0 8px 8px 0;
    border: 1px solid var(--border);
    border-left-width: 4px;
}

.passage-paragraph h4 {
    margin-bottom: 10px;
    font-size: 1.1rem;
    color: var(--primary);
}

/* Diagram Rendering */
.diagram-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 0.95rem;
}

.diagram-table th, .diagram-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.diagram-table th {
    background: rgba(153, 27, 27, 0.05);
    font-weight: 600;
    color: var(--primary);
    border-top: 1px solid var(--border);
}

.diagram-table tr:hover {
    background: rgba(153, 27, 27, 0.01);
}

/* Official CELPIP Part 2 look: compact community classified / flyer board */
.diagram-classified {
    background: #9ec8e8;
    border: 2px solid #1a1a1a;
    border-radius: 2px;
    padding: 10px;
    box-sizing: border-box;
    width: 100%;
    max-width: 100%;
}

.diagram-classified-header {
    background: #fff;
    border: 2px solid #111;
    padding: 6px 10px;
    margin-bottom: 8px;
}

.diagram-classified-title {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.92rem;
    font-weight: 800;
    color: #111 !important;
    letter-spacing: 0.01em;
    text-transform: none;
    line-height: 1.25;
}

.diagram-classified-subtitle {
    margin: 3px 0 0;
    font-size: 0.75rem;
    color: #333;
    line-height: 1.35;
    font-weight: 500;
}

.diagram-classified-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
    align-items: stretch;
}

.diagram-classified-schedule .diagram-classified-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.diagram-classified-flyer .diagram-classified-grid {
    grid-template-columns: 1fr;
}

.diagram-ad-card {
    position: relative;
    background: #fff;
    border: 2px solid #111;
    padding: 10px 10px 8px;
    box-sizing: border-box;
    min-width: 0;
    overflow: hidden;
}

.diagram-ad-thick {
    border-width: 3px;
}

.diagram-ad-has-art {
    padding-bottom: 40px;
}

.diagram-ad-slot {
    display: inline-block;
    background: #111;
    color: #fff;
    font-size: 0.65rem;
    font-weight: 800;
    padding: 1px 5px;
    letter-spacing: 0.03em;
    margin: 0 0 6px;
    line-height: 1.2;
}

.diagram-ad-heading {
    margin: 0 0 6px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 0.88rem;
    font-weight: 800;
    color: #111 !important;
    line-height: 1.2;
}

.diagram-ad-card:nth-child(3n+1) .diagram-ad-heading {
    text-transform: uppercase;
    letter-spacing: 0.02em;
    font-size: 0.92rem;
}

.diagram-ad-lines {
    margin: 0;
    padding: 0;
    list-style: none;
}

.diagram-ad-lines li {
    position: relative;
    padding-left: 0.85em;
    margin: 0 0 2px;
    font-size: 0.72rem;
    line-height: 1.3;
    color: #1a1a1a;
    word-break: break-word;
}

.diagram-ad-lines li::before {
    content: "•";
    position: absolute;
    left: 0;
    font-weight: 700;
}

.diagram-ad-contact {
    margin: 6px 0 0;
    font-size: 0.7rem;
    font-weight: 700;
    color: #111;
    line-height: 1.3;
}

.diagram-ad-art {
    position: absolute;
    right: 6px;
    bottom: 4px;
    width: 36px !important;
    height: 36px !important;
    max-width: 36px !important;
    max-height: 36px !important;
    pointer-events: none;
    opacity: 0.85;
    overflow: hidden;
}

.diagram-ad-icon,
.diagram-ad-art svg {
    width: 36px !important;
    height: 36px !important;
    max-width: 36px !important;
    max-height: 36px !important;
    display: block !important;
}

.diagram-classified-footnote {
    margin: 8px 0 0;
    font-size: 0.68rem;
    color: #1a1a1a;
    background: rgba(255,255,255,0.75);
    border: 1px solid #111;
    padding: 3px 6px;
    line-height: 1.3;
}

.diagram-poster-empty {
    margin: 0;
    color: #1a1a1a;
    font-size: 0.85rem;
    grid-column: 1 / -1;
}

.diagram-item-highlight {
    background-color: #fef08a !important;
    border-color: #ca8a04 !important;
    box-shadow: 0 0 0 2px rgba(234, 179, 8, 0.45) !important;
}

@media (max-width: 900px) {
    .diagram-classified-grid {
        grid-template-columns: 1fr;
    }
}

/* Dropdown styling */
.exam-select {
    background: #ffffff;
    color: var(--text-main);
    border: 1px solid rgba(15, 23, 42, 0.2);
    border-radius: 4px;
    padding: 6px 12px;
    font-family: inherit;
    font-size: 0.95rem;
    cursor: pointer;
    outline: none;
    max-width: 100%;
    margin: 4px 0;
    transition: var(--transition);
}

.exam-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Multiple choice questions */
.question-item {
    margin-bottom: 32px;
    padding: 24px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 2px 4px rgba(0,0,0,0.01);
}

.question-text {
    font-weight: 600;
    margin-bottom: 16px;
    font-size: 1.05rem;
    color: var(--text-main);
}

.option-label {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    margin-bottom: 8px;
    background: rgba(0,0,0,0.01);
    border: 1px solid rgba(0,0,0,0.03);
    transition: var(--transition);
}

.option-label:hover {
    background: rgba(153, 27, 27, 0.02);
    border-color: rgba(153, 27, 27, 0.15);
}

.option-label input[type="radio"] {
    accent-color: var(--primary);
    width: 18px;
    height: 18px;
}

/* Bottom exam footer (Official Exam style) */
.exam-footer {
    flex-shrink: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 16px;
    background: #ffffff;
    border-top: 1px solid var(--border);
    height: 62px;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.01);
    gap: 8px;
}

.exam-footer > button {
    flex-shrink: 0;
}

.exam-footer-indicators {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: 0 10px;
    overflow-x: auto;
    flex-shrink: 1;
    min-width: 0;
    scrollbar-width: thin;
    scroll-behavior: smooth;
    padding: 4px 2px;
}

/* Custom thin scrollbar */
.exam-footer-indicators::-webkit-scrollbar {
    height: 4px;
}
.exam-footer-indicators::-webkit-scrollbar-track {
    background: transparent;
}
.exam-footer-indicators::-webkit-scrollbar-thumb {
    background: rgba(153, 27, 27, 0.25);
    border-radius: 2px;
}

.part-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.22s ease;
    white-space: nowrap;
    flex-shrink: 0;
    border: 1.5px solid transparent;
    background: #f1f5f9;
    color: var(--text-muted);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

/* Active (current) part */
.part-indicator.active {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 2px 10px rgba(153, 27, 27, 0.28);
    transform: translateY(-1px);
}

/* Visited (completed) part */
.part-indicator.visited {
    background: rgba(16, 185, 129, 0.08);
    color: #15803d;
    border-color: rgba(16, 185, 129, 0.35);
}

.part-indicator.visited:hover {
    background: rgba(16, 185, 129, 0.15);
    border-color: rgba(16, 185, 129, 0.5);
    transform: translateY(-1px);
}

/* Locked / not-yet-reached part */
.part-indicator.locked {
    opacity: 0.55;
    background: #f8fafc;
    color: #94a3b8;
    border-color: #e2e8f0;
    cursor: default;
    pointer-events: none;
}

.part-indicator:hover:not(.active):not(.locked) {
    background: rgba(153, 27, 27, 0.06);
    color: var(--primary);
    border-color: rgba(153, 27, 27, 0.2);
    transform: translateY(-1px);
}

.part-indicator.active:hover {
    background: #7f1d1d;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(153, 27, 27, 0.35);
}

/* Task label inside pill */
.pi-label {
    display: inline-block;
}

/* Dot indicators (right side of label) */
.pi-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    flex-shrink: 0;
}
.pi-dot-current {
    background: rgba(255,255,255,0.8);
    box-shadow: 0 0 4px rgba(255,255,255,0.6);
}
.pi-dot-visited {
    background: #16a34a;
    box-shadow: 0 0 4px rgba(22, 163, 74, 0.4);
}
.part-indicator.active .pi-dot-visited { background: rgba(255,255,255,0.7); }

.part-indicator-arrow {
    font-size: 0.82rem;
    color: #cbd5e1;
    flex-shrink: 0;
}

/* Paywall / Pricing Screen */
.pricing-container {
    max-width: 600px;
    margin: 80px auto;
    padding: 40px;
    text-align: center;
    border-top: 4px solid var(--primary) !important;
}

.pricing-header h2 {
    font-size: 2.2rem;
    margin-bottom: 12px;
    color: var(--primary);
}

.pricing-header p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.price-text {
    font-size: 3.2rem;
    font-weight: 800;
    margin-bottom: 20px;
    color: var(--text-main);
}

.price-text span {
    font-size: 1.2rem;
    color: var(--text-muted);
    font-weight: 400;
}

.features-list {
    text-align: left;
    max-width: 380px;
    margin: 30px auto;
}

.features-list li {
    list-style: none;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.05rem;
}

.features-list li::before {
    content: "✓";
    color: var(--primary);
    font-weight: 700;
    font-size: 1.2rem;
}

/* Results Screen */
.results-container {
    max-width: min(1400px, 97vw);
    width: 100%;
    margin: 16px auto;
    padding: 24px 28px 28px;
    border-top: 4px solid var(--primary) !important;
    box-sizing: border-box;
}

.results-header {
    text-align: center;
    margin-bottom: 18px;
}

.results-header h2 {
    font-size: 1.85rem;
    margin-bottom: 6px;
    color: var(--primary);
}

.results-header p {
    margin: 0;
    color: var(--text-muted);
}

.results-body {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* Reading: score summary | answer review side-by-side */
.results-container.results-layout-horizontal .results-body {
    display: grid;
    grid-template-columns: minmax(200px, 240px) minmax(0, 1fr);
    gap: 24px;
    align-items: stretch;
    min-height: min(78vh, 860px);
}

.results-summary-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.results-container.results-layout-horizontal .results-summary-panel {
    position: sticky;
    top: 12px;
    align-self: start;
    padding: 16px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface, #fff);
}

.results-score-box {
    display: flex;
    justify-content: center;
    gap: 28px;
    margin: 8px 0;
}

.results-container.results-layout-horizontal .results-score-box {
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin: 0;
}

.score-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    border: 4px solid var(--primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.02);
}

.results-container.results-layout-horizontal .score-circle {
    width: 118px;
    height: 118px;
}

.score-val {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--primary);
}

.results-container.results-layout-horizontal .score-val {
    font-size: 1.85rem;
}

.score-lbl {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
}

.results-container.results-layout-horizontal .score-lbl {
    font-size: 0.72rem;
}

.score-circle.band {
    border-color: var(--text-main);
}

.score-circle.band .score-val {
    color: var(--text-main);
}

.results-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.results-container.results-layout-horizontal .results-actions {
    flex-direction: column;
    width: 100%;
}

.results-container.results-layout-horizontal .results-actions .btn-primary,
.results-container.results-layout-horizontal .results-actions .btn-secondary {
    width: 100%;
}

.results-review-section {
    min-width: 0;
}

.results-review-heading {
    margin: 0 0 12px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.results-container.results-layout-horizontal #btn-results-review {
    display: none;
}

/* Wide detailed review frame inside results */
.results-review-layout {
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, 1fr);
    gap: 20px;
    height: min(72vh, 820px);
    min-height: 520px;
    margin-top: 0;
}

.results-container.results-layout-horizontal .results-review-layout {
    height: min(78vh, 860px);
    min-height: 560px;
}

.results-review-layout .exam-left-pane,
.results-review-layout #review-passage-container {
    background: #fff;
    padding: 28px 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow-y: auto;
    height: 100%;
}

.results-review-layout #review-questions-list {
    overflow-y: auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-right: 4px;
}

.results-review-layout .passage-text {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--text-main);
}

.results-review-layout .passage-text p {
    margin: 0 0 1em;
}

.results-review-layout .question-item {
    font-size: 0.98rem;
    line-height: 1.55;
}

@media (max-width: 980px) {
    .results-container {
        max-width: 100%;
        margin: 12px auto;
        padding: 18px 14px 24px;
    }

    .results-container.results-layout-horizontal .results-body {
        grid-template-columns: 1fr;
        min-height: 0;
    }

    .results-container.results-layout-horizontal .results-summary-panel {
        position: static;
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        align-items: center;
    }

    .results-container.results-layout-horizontal .results-score-box {
        flex-direction: row;
        gap: 16px;
    }

    .results-container.results-layout-horizontal .results-actions {
        flex-direction: row;
        width: auto;
    }

    .results-container.results-layout-horizontal .results-actions .btn-primary,
    .results-container.results-layout-horizontal .results-actions .btn-secondary {
        width: auto;
    }

    .results-container.results-layout-horizontal #btn-results-review {
        display: none;
    }

    .results-review-layout {
        grid-template-columns: 1fr;
        height: auto;
        min-height: 0;
    }

    .results-review-layout #review-passage-container {
        max-height: 42vh;
    }

    .results-review-layout #review-questions-list {
        max-height: none;
        height: auto;
    }
}

/* Graded question review states */
.graded-correct {
    border: 1px solid var(--success) !important;
    background: rgba(6, 95, 70, 0.02) !important;
}

.graded-incorrect {
    border: 1px solid var(--primary) !important;
    background: rgba(153, 27, 27, 0.02) !important;
}

.correct-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--success);
    background: var(--success-glow);
    border-radius: 4px;
    margin-top: 8px;
}

.incorrect-badge {
    display: inline-block;
    padding: 4px 10px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    background: var(--error-glow);
    border-radius: 4px;
    margin-top: 8px;
}

/* Toast Message */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: #ffffff;
    border: 1px solid var(--border);
    padding: 16px 24px;
    border-radius: var(--radius);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
    transform: translateY(100px);
    opacity: 0;
    color: var(--text-main);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast-success {
    border-left: 4px solid var(--success);
}

.toast-error {
    border-left: 4px solid var(--primary);
}

.loading-spinner {
    border: 3px solid rgba(153, 27, 27, 0.1);
    border-radius: 50%;
    border-top: 3px solid var(--primary);
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    vertical-align: middle;
}

button .loading-spinner,
.btn-primary .loading-spinner,
.btn-secondary .loading-spinner {
    border: 3px solid rgba(255, 255, 255, 0.25);
    border-top-color: #fff;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hidden {
    display: none !important;
}

/* Notification Panel */
#notif-panel {
    animation: fadeIn 0.2s ease;
}

/* Landing View Styles */
.landing-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px;
}

.landing-hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 100px;
    margin-top: 40px;
}

@media (max-width: 900px) {
    .landing-hero {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
        margin-top: 20px;
    }
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

@media (max-width: 900px) {
    .hero-content {
        align-items: center;
    }
}

.badge-new {
    background: rgba(153, 27, 27, 0.08);
    color: var(--primary);
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: 20px;
    border: 1px solid rgba(153, 27, 27, 0.15);
}

.hero-content h1 {
    font-size: 3.2rem;
    line-height: 1.15;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--text-main);
    background: linear-gradient(135deg, var(--primary) 0%, #3b0712 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

@media (max-width: 600px) {
    .hero-content h1 {
        font-size: 2.4rem;
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    line-height: 1.6;
    margin-bottom: 36px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    width: 100%;
}

@media (max-width: 900px) {
    .hero-actions {
        justify-content: center;
    }
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.hero-stats {
    display: flex;
    gap: 30px;
    align-items: center;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* Hero Preview Device Card */
.hero-preview {
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
}

.preview-header {
    background: #f1f5f9;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}

.preview-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.preview-dot.red { background: #ef4444; }
.preview-dot.yellow { background: #f59e0b; }
.preview-dot.green { background: #10b981; }

.preview-title {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    margin-left: 10px;
}

.preview-body {
    padding: 24px;
    background: #ffffff;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.preview-test-card {
    padding: 16px;
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preview-test-card.locked {
    opacity: 0.65;
}

.preview-test-info h5 {
    font-size: 1rem;
    color: var(--text-main);
    font-weight: 600;
}

.preview-test-info p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 0;
}

.preview-badge-free {
    background: var(--success-glow);
    color: var(--success);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
}

.preview-badge-lock {
    background: rgba(15, 23, 42, 0.05);
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
}

/* Features section */
.landing-features {
    margin-bottom: 100px;
    text-align: center;
}

.landing-features h2 {
    font-size: 2.2rem;
    margin-bottom: 12px;
    color: var(--text-main);
    font-weight: 800;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 50px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 40px 30px;
    text-align: left;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.feature-icon {
    font-size: 2.2rem;
    margin-bottom: 20px;
    background: rgba(153, 27, 27, 0.06);
    width: 60px;
    height: 60px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-card h4 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text-main);
    font-weight: 700;
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* CTA Card */
.landing-cta {
    padding: 60px;
    text-align: center;
    border-left: 6px solid var(--primary) !important;
    background: linear-gradient(to right, #ffffff, rgba(153, 27, 27, 0.02));
    margin-bottom: 60px;
}

.landing-cta h3 {
    font-size: 2rem;
    margin-bottom: 12px;
    font-weight: 800;
    color: var(--primary);
}

.landing-cta p {
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

/* Dashboard Tabs */
.dashboard-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 12px;
    margin-bottom: 30px;
    border-bottom: 2px solid rgba(153, 27, 27, 0.08);
    padding-bottom: 1px;
}

/* Top-level Practice / Study tabs (modern card design) */
.top-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 8px 0 22px;
    padding: 6px;
    background: rgba(99, 102, 241, 0.06);
    border-radius: 16px;
    border: 1px solid rgba(99, 102, 241, 0.15);
}

.top-tab {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 14px 18px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--text-muted);
    cursor: pointer;
    transition: transform 0.18s ease, background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
    text-align: left;
    font-family: inherit;
}

.top-tab:hover {
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-main);
    transform: translateY(-1px);
}

.top-tab-icon {
    font-size: 1.4rem;
    line-height: 1;
}

.top-tab-label {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.01em;
}

.top-tab-sub {
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-muted);
    opacity: 0.9;
}

.top-tab.active {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    color: #fff;
    border-color: rgba(255, 255, 255, 0.18);
    box-shadow: 0 6px 18px rgba(99, 102, 241, 0.32);
}

.top-tab.active .top-tab-sub,
.top-tab.active .top-tab-icon {
    color: #fff;
    opacity: 0.95;
}

@media (max-width: 560px) {
    .top-tabs {
        grid-template-columns: 1fr;
    }
}

/* Hide inner tab buttons that don't belong to the active top-level tab */
.dashboard-tabs .tab-btn.hidden-by-top-tab {
    display: none;
}

.tab-btn {
    padding: 10px 14px;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--primary);
}

.tab-btn.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Individual Practice Grid Layout */
.practice-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 30px;
}

@media (max-width: 600px) {
    .practice-grid {
        grid-template-columns: 1fr;
    }
}

.practice-card {
    padding: 36px 24px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid var(--border);
    border-radius: 14px;
}

.practice-card:hover {
    transform: translateY(-3px);
    border-color: var(--primary);
    box-shadow: 0 8px 24px rgba(153, 27, 27, 0.1);
}

.practice-card.active {
    border-color: var(--primary) !important;
    background: rgba(153, 27, 27, 0.04) !important;
    box-shadow: 0 4px 16px rgba(153, 27, 27, 0.12);
}

.practice-card-icon {
    font-size: 2.8rem;
    margin-bottom: 14px;
    display: block;
    line-height: 1;
}

.practice-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--primary);
}

.practice-card p {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.5;
}

/* Testimonials Section */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
    margin-bottom: 40px;
}

.testimonial-card {
    padding: 24px;
    text-align: left;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 220px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 12px 28px rgba(153, 27, 27, 0.08);
}

.testimonial-rating {
    color: #f59e0b;
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.testimonial-text {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-main);
    margin-bottom: 20px;
    font-style: italic;
}

.testimonial-user {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: auto;
}

.testimonial-user .avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    color: #ffffff;
    font-weight: 700;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.testimonial-user .user-info {
    display: flex;
    flex-direction: column;
}

.testimonial-user .user-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
}

.testimonial-user .user-target {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Loading Overlay */
.loading-overlay-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-overlay-card {
    max-width: 450px;
    padding: 40px;
    text-align: center;
    background: #ffffff;
    border-top: 4px solid var(--primary) !important;
    border-radius: var(--radius);
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.15);
}

.loading-spinner.large {
    width: 50px;
    height: 50px;
    border-width: 4px;
    margin-bottom: 20px;
}

/* Personal notebook add dialog */
.notebook-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(3px);
}
.notebook-modal-overlay.hidden { display: none; }
.notebook-modal-card {
    width: min(480px, 100%);
    max-height: min(90vh, 720px);
    overflow: auto;
    padding: 24px;
    background: #fff;
    border-radius: var(--radius);
    border-top: 4px solid var(--primary);
    box-shadow: 0 20px 50px rgba(15, 23, 42, 0.18);
}
.notebook-list-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.notebook-list-item {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.7);
}
.notebook-list-item strong {
    display: block;
    font-size: 1.05rem;
    color: var(--text-main);
    margin-bottom: 4px;
}
#view-exam .passage-text,
#view-exam .passage-content,
#view-exam .passage-paragraph,
#view-exam #transcript-box {
    cursor: text;
}

/* Writing & AI Feedback Styles */
.writing-feedback-section {
    margin-top: 30px;
    background: #ffffff;
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.rubric-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-bottom: 22px;
}

@media (max-width: 768px) {
    .rubric-grid {
        grid-template-columns: 1fr;
    }
}

.feedback-block-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 12px;
    border-bottom: 2px solid var(--border);
    padding-bottom: 6px;
    margin-top: 25px;
}

.spelling-table {
    width: 100%;
    border-collapse: collapse;
    margin: 15px 0;
}

.spelling-table th, .spelling-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.95rem;
}

.spelling-table th {
    background: rgba(153, 27, 27, 0.04);
    font-weight: 600;
    color: var(--primary);
}

.spelling-error-text {
    text-decoration: line-through;
    color: #b91c1c;
    font-weight: 500;
}

.spelling-correction-text {
    color: #047857;
    font-weight: 600;
}

.essay-compare-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-top: 15px;
}

@media (max-width: 768px) {
    .essay-compare-box {
        grid-template-columns: 1fr;
    }
}

.essay-pane-view {
    background: #f8fafc;
    border: 1px solid var(--border);
    padding: 20px;
    border-radius: var(--radius);
    font-size: 1rem;
    line-height: 1.6;
    max-height: 300px;
    overflow-y: auto;
    white-space: pre-wrap;
}

/* Full Exam Summary Grid */
.full-exam-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 30px 0;
}

@media (max-width: 768px) {
    .full-exam-grid {
        grid-template-columns: 1fr;
    }
}

.full-exam-section-card {
    padding: 20px;
    text-align: center;
    border-top: 3px solid var(--primary);
}

.full-exam-section-card h4 {
    margin-bottom: 8px;
    color: var(--text-main);
    font-size: 1.1rem;
}

.full-exam-section-card .score-display {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary);
    margin: 10px 0;
}

.full-exam-section-card .band-display {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ── Listening: Fill-in-the-blank dropdown (Parts 4-6) ── */
.fill-blank-passage {
    line-height: 1.9;
    font-size: 1rem;
    color: var(--text-main);
}

.fill-blank-select {
    display: inline-block;
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border: 2px solid #3b82f6;
    border-radius: var(--radius);
    padding: 3px 26px 3px 8px;
    font-family: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    color: #1d4ed8;
    cursor: pointer;
    vertical-align: middle;
    margin: 0 3px;
    min-width: 110px;
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%231d4ed8' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 7px center;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.fill-blank-select:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.fill-blank-select:has(option:checked:not([value=""])) {
    background: linear-gradient(135deg, #dcfce7, #bbf7d0);
    border-color: #16a34a;
    color: #15803d;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2315803d' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
}

/* ── Listening: TTS blind question buttons (Parts 0-3) ── */
.question-audio-badge {
    background: rgba(99, 102, 241, 0.07);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius);
    padding: 24px 20px;
    margin-bottom: 12px;
    animation: pulse-border 2s ease-in-out infinite;
}

@keyframes pulse-border {
    0%, 100% { border-color: rgba(99, 102, 241, 0.2); }
    50%       { border-color: rgba(99, 102, 241, 0.5); }
}

/* ── Listening Part 5: Discord-style speaker stage ── */
.listening-discord-stage {
    background: #1e1f22;
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 14px;
    padding: 28px 20px 24px;
    margin-bottom: 14px;
}

.listening-discord-stage-label {
    color: #949ba4;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 18px;
    text-align: center;
}

.listening-discord-speakers {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: clamp(18px, 6vw, 48px);
    flex-wrap: wrap;
}

.listening-discord-speaker {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    min-width: 88px;
    opacity: 0.72;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.listening-discord-speaker.is-speaking {
    opacity: 1;
    transform: translateY(-2px);
}

.listening-discord-avatar {
    --speaker-color: #5865F2;
    position: relative;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: color-mix(in srgb, var(--speaker-color) 35%, #2b2d31);
    color: #fff;
    font-weight: 800;
    font-size: 1.35rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 3px solid transparent;
    transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.listening-discord-speaker.is-speaking .listening-discord-avatar {
    border-color: #23a559;
    box-shadow: 0 0 0 3px rgba(35, 165, 89, 0.35);
    transform: scale(1.04);
}

.listening-discord-rings {
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    pointer-events: none;
    opacity: 0;
}

.listening-discord-speaker.is-speaking .listening-discord-rings {
    opacity: 1;
    box-shadow:
        0 0 0 0 rgba(35, 165, 89, 0.55),
        0 0 0 0 rgba(35, 165, 89, 0.35);
    animation: discord-speak-ring 1.4s ease-out infinite;
}

@keyframes discord-speak-ring {
    0% {
        box-shadow:
            0 0 0 0 rgba(35, 165, 89, 0.5),
            0 0 0 0 rgba(35, 165, 89, 0.35);
    }
    70% {
        box-shadow:
            0 0 0 10px rgba(35, 165, 89, 0),
            0 0 0 18px rgba(35, 165, 89, 0);
    }
    100% {
        box-shadow:
            0 0 0 0 rgba(35, 165, 89, 0),
            0 0 0 0 rgba(35, 165, 89, 0);
    }
}

.listening-discord-name {
    color: #f2f3f5;
    font-size: 0.82rem;
    font-weight: 600;
}

.listening-discord-speaker.is-speaking .listening-discord-name {
    color: #23a559;
}

.tts-option-btn {
    transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.tts-option-btn:hover {
    transform: translateX(3px);
    border-color: var(--primary) !important;
}

.tts-option-btn:active {
    transform: scale(0.98);
}

.tts-option-selected {
    background: var(--primary) !important;
    border-color: var(--primary) !important;
    color: #fff !important;
}

/* ── Speaking: Recording Waves & Animation ── */
.recording-animation-container .bar {
    display: inline-block;
    width: 4px;
    height: 100%;
    background-color: var(--secondary);
    border-radius: 4px;
    animation: bounce 1.2s ease-in-out infinite;
}

.recording-animation-container .bar-1 { animation-delay: 0.1s; height: 18px; }
.recording-animation-container .bar-2 { animation-delay: 0.3s; height: 28px; }
.recording-animation-container .bar-3 { animation-delay: 0.15s; height: 22px; }
.recording-animation-container .bar-4 { animation-delay: 0.4s; height: 26px; }
.recording-animation-container .bar-5 { animation-delay: 0.25s; height: 16px; }

@keyframes bounce {
    0%, 100% {
        transform: scaleY(1);
    }
    50% {
        transform: scaleY(1.8);
    }
}

.spinner {
    border: 4px solid rgba(16, 185, 129, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ── Attempt History filters ── */
.history-header {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-bottom: 12px;
}

.history-header h3 {
    margin: 0;
}

.history-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.history-control {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex: 1;
    min-width: 140px;
}

.history-control span {
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.history-control select {
    width: 100%;
    height: 38px;
    padding: 6px 10px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 500;
}

.history-control select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.history-finished-tick {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--success-glow);
    color: var(--success);
    border: 1.5px solid var(--success);
    font-size: 0.75rem;
    font-weight: 800;
    line-height: 1;
    flex-shrink: 0;
}

.history-item-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.history-item-card:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

/* Feedback readability */
.feedback-prose {
    line-height: 1.65;
}

.feedback-prose p {
    margin: 0 0 0.65rem 0;
}

.feedback-prose p:last-child {
    margin-bottom: 0;
}

.feedback-bullets {
    margin: 0.35rem 0 0.75rem 1.15rem;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.95rem;
}

.feedback-bullets li {
    line-height: 1.55;
}

.feedback-bullet-body {
    display: block;
    margin-top: 0.35rem;
}

.feedback-bullets li strong {
    color: var(--text-main);
}

/* Study tab — reuse dashboard / history patterns */
.study-tab-panel.hidden { display: none; }

.study-muted {
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.5;
    margin: 0;
}

.study-setup-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin: 14px 0 16px;
}

.study-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.study-progress-track {
    height: 6px;
    background: rgba(15, 23, 42, 0.08);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 14px;
}

.study-progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.25s ease;
}

.study-step-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.study-skill-grid {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.study-score-note {
    background: rgba(185, 28, 28, 0.06);
    border: 1px solid rgba(185, 28, 28, 0.22);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 14px;
    color: var(--text-main);
    font-size: 0.92rem;
    line-height: 1.45;
}

.study-skill-chart-wrap {
    height: 170px;
    position: relative;
    width: 100%;
    margin-bottom: 14px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 12px;
}

.study-skill-grid .history-item-card.study-skill-pick {
    cursor: pointer;
    width: 100%;
    text-align: left;
    font: inherit;
    color: inherit;
}

.study-skill-grid .history-item-card.study-skill-pick.selected,
.study-skill-grid .history-item-card.study-skill-pick[aria-pressed="true"] {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px var(--primary);
}

.study-help-list {
    margin: 10px 0 0;
    padding-left: 18px;
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.55;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.study-words-deck {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    max-width: 640px;
}

.study-flashcard {
    min-height: 200px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    cursor: pointer;
    margin-bottom: 10px;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.study-flashcard:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.study-flash-face {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-main);
}

.study-flash-back-inner { text-align: left; width: 100%; }

.study-flash-l1 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--primary);
}

.study-flash-def {
    font-size: 0.95rem;
    margin-bottom: 10px;
    line-height: 1.45;
}

.study-flash-ex {
    font-size: 0.88rem;
    color: var(--text-muted);
    font-style: italic;
}

.study-step-type {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin-bottom: 4px;
}

.study-actions-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.study-quiz-body .vocab-quiz-q {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: 10px;
}

.study-quiz-body .vocab-quiz-q h5 {
    margin: 0 0 10px;
    font-size: 1rem;
}

.study-quiz-body .vocab-quiz-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.study-quiz-body .vocab-quiz-options label {
    display: flex;
    gap: 8px;
    align-items: flex-start;
    font-size: 0.9rem;
    cursor: pointer;
    line-height: 1.4;
}

.study-grade-actions {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 10px;
    max-width: 640px;
}

.study-grade-actions .btn-primary,
.study-grade-actions .btn-secondary {
    padding: 10px 8px;
    font-size: 0.85rem;
}

.study-pattern-lesson {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.study-pattern-card {
    padding: 16px 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.72);
}

.study-pattern-card-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.study-pattern-card-head h5 {
    margin: 2px 0 0;
    font-size: 1.05rem;
    color: var(--text-main);
    font-weight: 700;
}

.study-pattern-meta {
    margin: 0;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.study-pattern-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: flex-end;
}

.study-pattern-tag {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(185, 28, 28, 0.08);
    color: var(--primary);
    border: 1px solid rgba(185, 28, 28, 0.18);
}

.study-pattern-formula {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 12px 14px;
    border-radius: var(--radius);
    background: linear-gradient(180deg, rgba(185, 28, 28, 0.06), rgba(15, 23, 42, 0.03));
    border: 1px solid rgba(185, 28, 28, 0.14);
    margin-bottom: 10px;
}

.study-pattern-formula-label {
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--primary);
}

.study-pattern-formula code {
    font-family: "Segoe UI", system-ui, sans-serif;
    font-size: 0.98rem;
    font-weight: 650;
    color: var(--text-main);
    white-space: pre-wrap;
    line-height: 1.45;
}

.study-pattern-explain {
    margin: 0 0 12px;
    color: var(--text-muted);
    font-size: 0.92rem;
    line-height: 1.55;
}

.study-pattern-examples {
    padding: 12px 14px;
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.025);
    border: 1px solid var(--border);
}

.study-pattern-examples-title {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.study-pattern-examples ul {
    margin: 0;
    padding-left: 1.15rem;
}

.study-pattern-examples li {
    margin: 0 0 6px;
    color: var(--text-main);
    font-size: 0.92rem;
    line-height: 1.5;
}

.study-pattern-examples li:last-child {
    margin-bottom: 0;
}

.study-pattern-try {
    margin-top: 12px;
    padding: 10px 12px;
    border-radius: var(--radius);
    border: 1px dashed rgba(185, 28, 28, 0.35);
    background: rgba(185, 28, 28, 0.04);
}

.study-pattern-try span {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 4px;
}

.study-pattern-try p {
    margin: 0;
    font-size: 0.92rem;
    color: var(--text-main);
    line-height: 1.5;
}

#vocab-flash-word {
    font-size: 1.75rem;
    font-weight: 800;
    margin-top: 8px;
    color: var(--text-main);
}

.vocab-quiz-footer { margin-top: 8px; }

/* Post-signup study onboarding */
.onboard-progress {
    display: flex;
    gap: 8px;
    justify-content: center;
    margin: 8px 0 22px;
}

.onboard-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(15, 23, 42, 0.12);
}

.onboard-dot.active {
    background: var(--primary);
    width: 22px;
    border-radius: 99px;
}

.onboard-step.hidden { display: none; }

.learn-card-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.courses-practice-grid {
    margin-bottom: 0;
}

@media (max-width: 720px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }
}

.learn-card {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 18px;
    background: rgba(255, 255, 255, 0.02);
}

.course-card {
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 100%;
    transition: var(--transition);
}

.course-card:hover {
    border-color: var(--primary);
    box-shadow: 0 6px 18px rgba(153, 27, 27, 0.08);
}

.course-card-top {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    flex: 1;
}

.course-card-logo {
    width: 52px;
    height: 52px;
    border-radius: var(--radius);
    background: rgba(153, 27, 27, 0.08);
    border: 1px solid rgba(153, 27, 27, 0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.55rem;
    line-height: 1;
    flex-shrink: 0;
}

.course-card-copy {
    min-width: 0;
}

.course-card-summary {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.4;
}

.course-card .btn-primary {
    align-self: flex-start;
}

.learn-card h4 {
    margin: 0 0 6px;
    font-size: 1.05rem;
    color: var(--text-main);
}

.learn-card .learn-meta {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.learn-template-block {
    margin-top: 10px;
    padding: 10px 12px;
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border);
    white-space: pre-wrap;
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--text-main);
}

.course-section-card {
    margin-bottom: 14px;
}

.course-section-card h4 {
    margin-bottom: 10px;
    color: var(--primary);
}

.course-section-body {
    color: var(--text-main);
    font-size: 0.95rem;
    line-height: 1.65;
}

.course-section-body p {
    margin: 0 0 12px;
}

.course-section-body ul,
.course-section-body ol {
    margin: 0 0 14px;
    padding-left: 1.25rem;
}

.course-section-body li {
    margin-bottom: 8px;
    line-height: 1.55;
}

.course-section-body strong {
    color: var(--primary);
    font-weight: 700;
}

.course-phrases {
    margin-top: 14px;
    padding: 12px 14px;
    border-radius: var(--radius);
    border: 1px solid rgba(153, 27, 27, 0.18);
    background: rgba(153, 27, 27, 0.04);
}

.course-phrases-title {
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--primary);
    margin-bottom: 8px;
}

.course-phrases ul {
    margin: 0;
    padding-left: 1.1rem;
}

.course-phrases li {
    margin-bottom: 6px;
    font-size: 0.92rem;
    line-height: 1.45;
    color: var(--text-main);
}

.clb-ladder-wrap {
    margin-top: 18px;
}

.clb-ladder-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 4px;
}

.clb-ladder-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.clb-ladder-action-btn {
    padding: 6px 10px;
    font-size: 0.78rem;
    line-height: 1.2;
}

.clb-ladder {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-top: 12px;
}

.clb-ladder-item {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.clb-ladder-item summary {
    cursor: pointer;
    padding: 10px 12px;
    font-weight: 700;
    color: var(--primary);
    background: rgba(99, 102, 241, 0.04);
    list-style: none;
}

.clb-ladder-item summary::-webkit-details-marker { display: none; }

.clb-ladder-body {
    padding: 12px 14px;
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--text-main);
    border-top: 1px solid var(--border);
}

.sample-annotated {
    display: grid;
    grid-template-columns: minmax(0, 1.4fr) minmax(180px, 0.85fr);
    gap: 14px;
    align-items: start;
    white-space: normal;
}

.sample-annotated-text,
.sample-plain {
    white-space: pre-wrap;
    line-height: 1.45;
    color: var(--text-main);
}

.sample-pat {
    display: inline;
    padding: 0 2px;
    border-radius: 3px;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
    color: inherit;
}

.sample-pat-opening { background: #dbeafe; }
.sample-pat-support { background: #dcfce7; }
.sample-pat-request { background: #fef3c7; }
.sample-pat-link { background: #ede9fe; }
.sample-pat-closing { background: #ffe4e6; }
.sample-pat-signoff { background: #e2e8f0; }

.sample-pat-legend {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px 10px;
    position: sticky;
    top: 8px;
    white-space: normal;
}

.sample-pat-legend-title {
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    margin: 0 0 6px;
    line-height: 1.2;
}

.sample-pat-legend-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.sample-pat-legend-item {
    display: flex;
    flex-direction: column;
    gap: 1px;
    margin: 0;
    padding: 0;
    line-height: 1.25;
}

.sample-pat-legend-head {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
}

.sample-pat-chip {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    border: 1px solid rgba(15, 23, 42, 0.15);
    display: inline-block;
    flex-shrink: 0;
}

.sample-pat-legend-label {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--text-main);
    line-height: 1.2;
    margin: 0;
}

.sample-pat-legend-note {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.3;
    margin: 0 0 0 16px;
}

@media (max-width: 900px) {
    .sample-annotated {
        grid-template-columns: 1fr;
    }
    .sample-pat-legend {
        position: static;
    }
}

@media (max-width: 700px) {
    .study-grade-actions {
        grid-template-columns: 1fr 1fr;
    }
    #study-skill-overview .dashboard-grid {
        grid-template-columns: 1fr !important;
    }
}

/* ─── Study: Templates / Courses / Samples visual refresh ─────────────────── */

:root {
    --sk-listening: #2563EB;
    --sk-listening-soft: #EFF6FF;
    --sk-listening-line: #BFDBFE;
    --sk-reading: #7C3AED;
    --sk-reading-soft: #F5F3FF;
    --sk-reading-line: #DDD6FE;
    --sk-writing: #059669;
    --sk-writing-soft: #ECFDF5;
    --sk-writing-line: #A7F3D0;
    --sk-speaking: #EA580C;
    --sk-speaking-soft: #FFF7ED;
    --sk-speaking-line: #FED7AA;
}

/* Per-skill accent variables, applied to a card via class */
.skill-listening { --sk: var(--sk-listening); --sk-soft: var(--sk-listening-soft); --sk-line: var(--sk-listening-line); }
.skill-reading   { --sk: var(--sk-reading);   --sk-soft: var(--sk-reading-soft);   --sk-line: var(--sk-reading-line); }
.skill-writing   { --sk: var(--sk-writing);   --sk-soft: var(--sk-writing-soft);   --sk-line: var(--sk-writing-line); }
.skill-speaking  { --sk: var(--sk-speaking);  --sk-soft: var(--sk-speaking-soft);  --sk-line: var(--sk-speaking-line); }

/* --- Rich learn card (templates, sample cards, course sections) --- */
.learn-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px 20px;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
    transition: var(--transition);
    overflow: hidden;
}

.learn-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.09);
    transform: translateY(-1px);
}

.learn-card[class*="skill-"] {
    border-color: var(--sk-line, var(--border));
}

.learn-card[class*="skill-"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--sk, var(--primary));
}

.learn-card-head {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.learn-badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 99px;
    color: var(--sk, var(--primary));
    background: var(--sk-soft, rgba(30, 58, 138, 0.06));
    border: 1px solid var(--sk-line, var(--border));
}

.learn-card h4 {
    margin: 0;
    font-size: 1.14rem;
    font-weight: 800;
    color: var(--text-main);
    line-height: 1.25;
}

.learn-chip-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 2px;
}

.learn-meta-chip {
    font-size: 0.74rem;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 99px;
    background: var(--surface-hover);
    border: 1px solid var(--border);
    color: var(--text-muted);
}

/* --- Numbered template steps --- */
.learn-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.learn-step {
    display: grid;
    grid-template-columns: 28px 1fr;
    column-gap: 12px;
    align-items: start;
}

.learn-step-no {
    grid-row: 1 / span 2;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.82rem;
    color: var(--sk, var(--primary));
    background: var(--sk-soft, rgba(30, 58, 138, 0.08));
    border: 1px solid var(--sk-line, var(--border));
}

.learn-step-lbl {
    grid-column: 2;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--sk, var(--primary));
    margin-bottom: 5px;
}

.learn-step .learn-template-block {
    grid-column: 2;
}

.learn-template-block {
    margin: 0;
    padding: 11px 13px;
    border-radius: 10px;
    background: var(--sk-soft, rgba(0, 0, 0, 0.03));
    border: 1px solid var(--sk-line, var(--border));
    white-space: pre-wrap;
    font-size: 0.88rem;
    line-height: 1.55;
    color: var(--text-main);
}

/* --- Tip chips --- */
.learn-tips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.learn-tip-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 99px;
    background: var(--success-glow);
    color: var(--success);
    border: 1px solid rgba(22, 101, 52, 0.2);
}

.learn-tip-chip::before {
    content: "✓";
    font-weight: 900;
}

/* --- Courses grid cards --- */
.courses-practice-grid .practice-card {
    border-width: 1px;
    border-radius: 16px;
    padding: 26px 22px;
    background: linear-gradient(180deg, #ffffff 0%, var(--surface-hover) 100%);
}

.courses-practice-grid .practice-card:hover {
    transform: translateY(-4px);
    border-color: var(--sk, var(--primary));
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.1);
}

.courses-practice-grid .practice-card .practice-card-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 16px;
    background: var(--sk-soft, var(--surface-hover));
    border: 1px solid var(--sk-line, var(--border));
    box-shadow: 0 6px 14px rgba(15, 23, 42, 0.06);
}

.courses-practice-grid .practice-card h4 {
    font-size: 1.25rem;
    color: var(--sk, var(--primary));
}

/* --- Course detail section cards --- */
.course-section-card.learn-card {
    margin-bottom: 14px;
}

.course-section-card h4 {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 0 12px;
    font-size: 1.06rem;
    color: var(--text-main);
}

.course-section-num {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 9px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.82rem;
    color: #fff;
    background: var(--sk, var(--primary));
}

.course-section-body {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Course phrase chips --- */
.course-phrases {
    margin-top: 14px;
    padding: 14px 16px;
    border-radius: 12px;
    background: var(--sk-soft, rgba(30, 58, 138, 0.04));
    border: 1px solid var(--sk-line, var(--border));
}

.course-phrases-title {
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--sk, var(--primary));
    margin-bottom: 10px;
}

.course-phrases ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.course-phrases li {
    margin: 0;
    padding: 6px 12px;
    background: #fff;
    border: 1px solid var(--sk-line, var(--border));
    border-radius: 99px;
    font-size: 0.85rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text-main);
    box-shadow: 0 1px 1px rgba(15, 23, 42, 0.03);
}

/* --- CLB ladder band colouring --- */
.clb-ladder-item {
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    background: var(--surface);
    transition: var(--transition);
}

.clb-ladder-item summary {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    font-weight: 800;
    color: var(--text-main);
    list-style: none;
}

.clb-band-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 64px;
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.02em;
}

.clb-band-note {
    font-size: 0.76rem;
    font-weight: 700;
    color: var(--sk, var(--primary));
}

.clb-ladder-item.clb-band-high { border-color: rgba(22, 101, 52, 0.3); }
.clb-ladder-item.clb-band-high summary { background: linear-gradient(90deg, var(--success-glow), transparent); }
.clb-ladder-item.clb-band-high .clb-band-pill { background: var(--success-glow); color: var(--success); border: 1px solid rgba(22, 101, 52, 0.25); }

.clb-ladder-item.clb-band-mid { border-color: rgba(30, 58, 138, 0.28); }
.clb-ladder-item.clb-band-mid summary { background: linear-gradient(90deg, var(--primary-glow), transparent); }
.clb-ladder-item.clb-band-mid .clb-band-pill { background: var(--primary-glow); color: var(--primary); border: 1px solid rgba(30, 58, 138, 0.22); }

.clb-ladder-item.clb-band-low { border-color: rgba(146, 64, 14, 0.28); }
.clb-ladder-item.clb-band-low summary { background: linear-gradient(90deg, rgba(146, 64, 14, 0.08), transparent); }
.clb-ladder-item.clb-band-low .clb-band-pill { background: rgba(146, 64, 14, 0.1); color: var(--score-low); border: 1px solid rgba(146, 64, 14, 0.25); }

@media (max-width: 600px) {
    .learn-step { grid-template-columns: 24px 1fr; column-gap: 10px; }
    .learn-step-no { width: 24px; height: 24px; }
}

/* ─── Typography polish ───────────────────────────────────────────────────── */

/* Crisper text rendering app-wide (safe, non-layout) */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Section headers in the three study views */
#templates-section h3,
#courses-section h3,
#samples-section h3 {
    letter-spacing: -0.012em;
    line-height: 1.2;
    font-weight: 800;
}

#templates-section > .history-header > p,
#courses-section > .history-header > p,
#samples-section > .history-header > p {
    letter-spacing: 0.002em;
    line-height: 1.55;
}

/* Card titles + badges */
.learn-card h4 {
    font-size: 1.18rem;
    line-height: 1.28;
    letter-spacing: -0.011em;
    font-weight: 800;
}

.learn-badge {
    letter-spacing: 0.07em;
    line-height: 1.2;
}

.learn-meta-chip {
    letter-spacing: 0.012em;
    font-variant-numeric: tabular-nums;
}

.learn-step-lbl {
    letter-spacing: 0.085em;
    line-height: 1.25;
}

.learn-step-no {
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

/* Template body text: comfortable measure + rhythm */
.learn-template-block {
    font-size: 0.905rem;
    line-height: 1.62;
    letter-spacing: 0.002em;
    text-wrap: pretty;
}

.learn-tip-chip {
    letter-spacing: 0.004em;
    line-height: 1.3;
}

/* Course grid copy */
.courses-practice-grid .practice-card h4 {
    letter-spacing: -0.012em;
    font-weight: 800;
}

.courses-practice-grid .practice-card p {
    font-size: 0.9rem;
    line-height: 1.55;
    letter-spacing: 0.002em;
    text-wrap: pretty;
}

/* Course detail reading text */
.course-section-card h4 {
    letter-spacing: -0.008em;
    line-height: 1.3;
}

.course-section-body {
    font-size: 0.955rem;
    line-height: 1.72;
    letter-spacing: 0.003em;
    max-width: 78ch;
    text-wrap: pretty;
}

.course-section-body p {
    margin: 0 0 0.8rem;
}

.course-section-body p:last-child {
    margin-bottom: 0;
}

.course-section-body ul,
.course-section-body ol {
    padding-left: 1.35rem;
    margin-bottom: 0.9rem;
}

.course-section-body li {
    line-height: 1.62;
    margin-bottom: 0.5rem;
}

.course-section-body li::marker {
    color: var(--sk, var(--primary));
}

.course-section-body strong {
    font-weight: 700;
    letter-spacing: -0.003em;
}

.course-phrases-title {
    letter-spacing: 0.075em;
    line-height: 1.25;
}

.course-phrases li {
    letter-spacing: 0.002em;
    line-height: 1.4;
    text-wrap: pretty;
}

/* CLB ladder numerals + labels */
.clb-ladder-item summary {
    letter-spacing: 0.004em;
}

.clb-band-pill {
    font-variant-numeric: tabular-nums;
    letter-spacing: 0.03em;
}

.clb-band-note {
    letter-spacing: 0.006em;
}

/* ─── Study Plan / Question Bank / Daily Drill accents ────────────────────── */

/* Study Plan stat cards */
.study-stat {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 14px 16px 14px 18px;
    display: flex;
    flex-direction: column;
    gap: 1px;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(15, 23, 42, 0.04);
}

.study-stat::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent, var(--primary));
}

.study-stat-ico {
    font-size: 1.1rem;
    line-height: 1;
    margin-bottom: 4px;
}

.study-stat-label {
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.075em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.study-stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-top: 2px;
    color: var(--text-main);
    letter-spacing: -0.012em;
    font-variant-numeric: tabular-nums;
}

.study-stat-sub {
    font-size: 0.76rem;
    color: var(--text-muted);
    line-height: 1.35;
}

.study-stat-days { --accent: #2563EB; }
.study-stat-budget { --accent: #059669; }
.study-stat-target { --accent: #7C3AED; }
.study-stat-today { --accent: #EA580C; }

/* Study Plan skill pick cards */
.study-skill-grid .history-item-card.study-skill-pick[class*="skill-"] {
    border-left: 4px solid var(--sk, var(--primary));
    border-radius: 10px;
}

.study-skill-grid .history-item-card.study-skill-pick .attempt-info p {
    font-weight: 800;
    letter-spacing: -0.005em;
}

.study-skill-grid .history-item-card.study-skill-pick .attempt-score .score-text {
    color: var(--sk, var(--primary));
    font-variant-numeric: tabular-nums;
}

/* Question Bank rows */
#bank-type-list .attempt-item.bank-row {
    border-left: 4px solid var(--sk, var(--primary));
    border-radius: 12px;
    background: linear-gradient(90deg, var(--sk-soft, rgba(30, 58, 138, 0.04)), transparent 55%);
}

#bank-type-list .attempt-item.bank-row .attempt-info p:first-child {
    font-weight: 800;
    letter-spacing: -0.005em;
}

#bank-type-list .attempt-item.bank-row .attempt-info p:last-child {
    font-variant-numeric: tabular-nums;
}

/* Today's steps */
.study-step-list .history-item-card.study-step {
    border-left: 4px solid var(--step-accent, var(--border));
    border-radius: 12px;
}

.step-type-vocab { --step-accent: #059669; }
.step-type-pattern { --step-accent: #7C3AED; }
.step-type-practice { --step-accent: #2563EB; }

.study-step-list .study-step .attempt-info span:first-child {
    letter-spacing: 0.06em;
}

/* Daily Drill skill buttons */
#drill-skill-picker .btn-secondary[class*="skill-"] {
    border-color: var(--sk-line, var(--border));
    color: var(--sk, var(--text-main));
    font-weight: 700;
}

#drill-skill-picker .btn-secondary[class*="skill-"]:hover {
    background: var(--sk-soft, var(--surface-hover));
    border-color: var(--sk, var(--primary));
}

/* ─── Notification Center ──────────────────────────────────────────────────── */

.notif-item {
    transition: background 0.15s ease;
}

.notif-item:hover {
    background: var(--surface-hover) !important;
}

.notif-item.unread {
    background: rgba(99, 102, 241, 0.06) !important;
    border-left: 3px solid var(--primary);
}

.notif-item.unread:hover {
    background: rgba(99, 102, 241, 0.1) !important;
}

/* ── Motion system: page transitions, staggered entrances, micro-interactions ── */
@keyframes view-in {
    from { opacity: 0; transform: translateY(14px) scale(0.998); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes rise-in {
    from { opacity: 0; transform: translateY(18px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes pop-in {
    0% { opacity: 0; transform: scale(0.96) translateY(8px); }
    100% { opacity: 1; transform: scale(1) translateY(0); }
}
@keyframes float-soft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}
@keyframes shimmer-slide {
    from { transform: translateX(-100%); }
    to { transform: translateX(100%); }
}
@keyframes toast-in {
    from { opacity: 0; transform: translateY(16px) scale(0.97); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes bar-grow {
    from { width: 0; }
}
@keyframes score-pop {
    0% { transform: scale(0.6); opacity: 0; }
    60% { transform: scale(1.06); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

main:not(.hidden) {
    animation: view-in 0.45s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.reveal {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 0.6s cubic-bezier(0.22, 1, 0.36, 1), transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    transition-delay: var(--reveal-delay, 0ms);
}
.reveal.is-visible {
    opacity: 1;
    transform: none;
}

.features-grid .feature-card,
.testimonials-grid .testimonial-card,
.practice-grid .practice-card,
.courses-grid .course-card {
    animation: rise-in 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.features-grid .feature-card:nth-child(2),
.testimonials-grid .testimonial-card:nth-child(2),
.practice-grid .practice-card:nth-child(2) { animation-delay: 0.06s; }
.features-grid .feature-card:nth-child(3),
.testimonials-grid .testimonial-card:nth-child(3),
.practice-grid .practice-card:nth-child(3) { animation-delay: 0.12s; }
.features-grid .feature-card:nth-child(4),
.testimonials-grid .testimonial-card:nth-child(4),
.practice-grid .practice-card:nth-child(4) { animation-delay: 0.18s; }
.features-grid .feature-card:nth-child(n+5),
.testimonials-grid .testimonial-card:nth-child(n+5) { animation-delay: 0.24s; }

.hero-preview {
    animation: float-soft 7s ease-in-out infinite;
}
.hero-content h1 {
    animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.hero-subtitle, .hero-actions, .hero-stats {
    animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.hero-subtitle { animation-delay: 0.08s; }
.hero-actions { animation-delay: 0.16s; }
.hero-stats { animation-delay: 0.24s; }

.btn-primary {
    position: relative;
    overflow: hidden;
}
.btn-primary::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0;
    width: 45%;
    left: 0;
    background: linear-gradient(105deg, transparent, rgba(255,255,255,0.35), transparent);
    transform: translateX(-120%);
    pointer-events: none;
}
.btn-primary:hover::after {
    animation: shimmer-slide 0.8s ease;
}
.btn-primary:active { transform: translateY(1px) scale(0.99); }
.btn-secondary:active, .tab-btn:active, .top-tab:active { transform: scale(0.98); }
.practice-card:active { transform: scale(0.98); }

.exam-footer-indicators .part-indicator { transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease; }
#questions-container .question-item { animation: rise-in 0.4s ease both; }
#test-list-container .test-card { animation: rise-in 0.4s ease both; }
#history-list .history-item-card { animation: rise-in 0.35s ease both; }

.score-circle {
    animation: score-pop 0.55s cubic-bezier(0.22, 1, 0.36, 1) both;
}
.study-progress-bar { animation: bar-grow 1s cubic-bezier(0.22, 1, 0.36, 1) both; }

.toast.show { animation: toast-in 0.35s cubic-bezier(0.22, 1, 0.36, 1) both; }
.notebook-modal-overlay:not(.hidden) .notebook-modal-card { animation: pop-in 0.3s cubic-bezier(0.22, 1, 0.36, 1) both; }
.loading-overlay-card { animation: pop-in 0.35s ease both; }

.skeleton {
    position: relative;
    overflow: hidden;
    background: rgba(15, 23, 42, 0.06);
    border-radius: var(--radius);
    min-height: 14px;
}
.skeleton::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.7), transparent);
    animation: shimmer-slide 1.4s infinite;
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    .hero-preview { animation: none; }
    .reveal { opacity: 1; transform: none; }
}



/* Institutional score presentation */
.score-val { color: var(--text-main); }
.score-circle { border-color: var(--border); }
.score-high { color: var(--score-high); }
.score-mid { color: var(--score-mid); }
.score-low { color: var(--score-low); }